The only thing with the cutting edge bullets is they don't fit in mags because of the extra length when reloading them. As for as accuracy I agree though. I guess if I was target shooting I could use the cutting edge bullets when I have time to single feed the bullet but with hunting it seems the Berger bullets are the best bet until something better comes on the market.

I bought 4 boxes of the GS 177's a while back. They did not shoot all that well out of my 300 RUM Sendero. That said, the manufacturers recommended twist for them is 9 and I shot them out of a 10. There is little to no room for seating depth adjustment in these bullets because their nose and tail is so long. I would recommend shooting them in a short throated chamber. They were only a few fps faster than the CE bullets I shot and cost a good bit more and i got better accuracy with the CE's.

I checked GS custom out, like Montanarifleman said, I too will have a 1-10 twist in my rifle because I found that their are higher BC's in the heavier bullets for the 30-378 so I made the gun base off of what was available on the market. I can use the 177 GS custom makes for elk but the Berger 230 hybrid has higher BC and is more suitable elk. I wonder what velocity Ill get form a 230 weight bullet on my 30-378, any one know??

If it's not too late I would highly recommend getting a 9 twist for the 230's. It's too late for my RUM build but I'm going to give them a go anyway. The 230's in a 10 twist are on the edge of stability.

From what I've read, RL33 would be a good choice in the 30-378. Just guessing, but I think 3200-3300 would be doable.

Length would be an issue too with the 230's, especially in the 378 cartridge.

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Mark, The 30-378 Accumark will cycle a bullet loaded to an OAL of 3.800" Some will go 3.820" The 230 Berger Hybrid was designed for use in 300 win mag box that is shorter. So, I think feel they are a very good fit in the 30-378. We have shot them in both the 300 win and 30-378 with awesome results, all 1 in 10 twists. The 30-378 with a 230 Berger is a long range hammer and they will expand too.

Jeff, I dont doubt your experience, but did you have to load the 230's all the way to the ogive? I just got a box of the 230's and they have a .905" nose as listed on Berger's data sheet. Add that to the 30-378 case length of 2.913 and you have a COAL of 3.818. So yes you can load them to cycle through the mag box but the bullets are seated deep into the case. Dave Young is using a Weatherby box in my 700 build that he's going to stretch to 3.90+ and my RUM case is only 2.842 long. I have one here (a 230 Hybrid) seated in a case to 3.90. It fits very well with the bearing of the bullet seated just slightly into the case.

My next big 30 will be a 30-338 LM Imp which will be better yet with a case length of 2.725 with more case volume. It should be a ballistic twin of the 30-378

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